skip to main content
DOE PAGES title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Metallic wire grid behavior and testing in a low pressure gaseous noble elements detector

Abstract

High voltage performance has been a challenge for noble element detectors. One piece of this challenge is the emission of electrons from metal electrodes when applying high voltage. This has become a major concern for low-background detectors such as LUX-ZEPLIN (LZ). LZ is a liquid xenon Time Projection Chamber (TPC) searching for Weakly Interactive Massive Particles (WIMPs). In this work, we demonstrate a method to measure electron emission from metallic electrode grids via detection of proportional scintillation light. As a result, we find consistency with Fowler-Nordheim emission with a surface parameter β = 1988 after electro-polishing treatment of a stainless steel grid.

Authors:
 [1]
  1. SLAC National Accelerator Lab., Menlo Park, CA (United States); Stanford Univ., Stanford, CA (United States)
Publication Date:
Research Org.:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1458615
Grant/Contract Number:  
[AC02-76SF00515]
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Instrumentation
Additional Journal Information:
[ Journal Volume: 13; Journal Issue: 05]; Journal ID: ISSN 1748-0221
Publisher:
Institute of Physics (IOP)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION; Cryogenic detectors; Noble liquid detectors (scintillation, ionization, double-phase)

Citation Formats

Ji, W. Metallic wire grid behavior and testing in a low pressure gaseous noble elements detector. United States: N. p., 2018. Web. doi:10.1088/1748-0221/13/05/c05015.
Ji, W. Metallic wire grid behavior and testing in a low pressure gaseous noble elements detector. United States. doi:10.1088/1748-0221/13/05/c05015.
Ji, W. Mon . "Metallic wire grid behavior and testing in a low pressure gaseous noble elements detector". United States. doi:10.1088/1748-0221/13/05/c05015. https://www.osti.gov/servlets/purl/1458615.
@article{osti_1458615,
title = {Metallic wire grid behavior and testing in a low pressure gaseous noble elements detector},
author = {Ji, W.},
abstractNote = {High voltage performance has been a challenge for noble element detectors. One piece of this challenge is the emission of electrons from metal electrodes when applying high voltage. This has become a major concern for low-background detectors such as LUX-ZEPLIN (LZ). LZ is a liquid xenon Time Projection Chamber (TPC) searching for Weakly Interactive Massive Particles (WIMPs). In this work, we demonstrate a method to measure electron emission from metallic electrode grids via detection of proportional scintillation light. As a result, we find consistency with Fowler-Nordheim emission with a surface parameter β = 1988 after electro-polishing treatment of a stainless steel grid.},
doi = {10.1088/1748-0221/13/05/c05015},
journal = {Journal of Instrumentation},
number = [05],
volume = [13],
place = {United States},
year = {2018},
month = {5}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Figures / Tables:

Figure 1 Figure 1: (Left) Overview of the detector. The detector has one PMT on the top, a PTFE reflective cone (green), the anode grid, and the gate grid. (Right) A photo of a wire surface taken with an electron microscope. The trace of the extrusion die can be seen on themore » surface.« less

Save / Share:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.